Method for reducing variable coefficient of #2 line P.O42.5 cement

A technology of variation coefficient and cement, applied in cement production, etc., can solve the problems of unreasonable proportion, complex composition, poor stability, etc., and achieve the effect of reasonable proportion, simple composition and good stability

Inactive Publication Date: 2015-04-01
GUANGXI YUFENG CEMENT
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Problems solved by technology

[0023] In the process of realizing the present invention, the inventors found that there are at least defects such as complex components, unreasonable proportioning and poor stability in the prior art

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  • Method for reducing variable coefficient of #2 line P.O42.5 cement
  • Method for reducing variable coefficient of #2 line P.O42.5 cement
  • Method for reducing variable coefficient of #2 line P.O42.5 cement

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Embodiment Construction

[0041] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0042] According to an embodiment of the present invention, such as Figure 1-Figure 4 As shown, a method for reducing the coefficient of variation of 2# line P.O42.5 cement is provided, including:

[0043] ⑴ Proportion the limestone, coal fly ash and granulated blast furnace slag powder in the following proportions:

[0044] Limestone: 6.1 parts;

[0045] Fly ash: 6.0 parts;

[0046] Granulated blast furnace slag powder: 5.4 parts;

[0047] (2) Add limestone, coal powder ash and granulated blast furnace slag powder into the cement mill according to the above ratio, and produce 2# line P.O42.5 cement through vertical mill grinding technology;

[0048] In step (2...

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Abstract

The invention discloses a method for reducing a variable coefficient of #2 line P.O42.5 cement. The method comprises the following steps: matching the following components in parts: 6.1 parts of limestone, 6.0 parts of coal ash and 5.4 parts of granulated blast furnace slag powder; adding the limestone, the coal ash and the granulated blast furnace slag powder into a cement grinding machine according to the ratios; and producing the #2 line P.O42.5 cement by a vertical mill grinding technology. By virtue of the method for reducing the variable coefficient of the #2 line P.O42.5 cement, the defects in the prior art that components are complicated, the ratio is not reasonable, the stability is poor and the like can be overcome; and the advantages of simple components, reasonable ratio and good stability are realized.

Description

technical field [0001] The invention relates to the technical field of cement processing, in particular to a method for reducing the coefficient of variation of 2# line P.O42.5 cement. Background technique [0002] According to the national cement quality management regulations, the coefficient of variation of P.042.5 cement is required to be ≤3.5%. Therefore, it is necessary to improve the quality stability of P.O42.5 cement to meet the national requirement that the coefficient of variation is ≤3.5%. [0003] The quality stability of P.O42.5 factory cement from October 2011 to January 2012 is statistically shown in Table 1. [0004] Table 1 [0005] project October November December January 2012 total average Specific surface area (m 2 / kg) 362 357 373 358 363 Loss on ignition (%) 3.74 3.76 3.51 3.48 3.62 28 days strength (Mpa) 53.4 53.0 53.0 53.0 53.1 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26C04B7/147
CPCY02P40/10
Inventor 邓玉莲杨茂鑫覃金英陈柳锋陈柳军张国霞黄丽玲刘丽君胡中文廖定卢燕玲隆盛康张芳
Owner GUANGXI YUFENG CEMENT
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